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HK-4000 Replacement Channel PCB - Output Stage Module with Heatsink Mounts

HK-4000 Replacement Channel PCB - Output Stage Module with Heatsink Mounts

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Product Details & Features

Restore your amplifier's performance with this genuine HK-4000 Channel Amplifier Module. This is a complete output stage PCB designed to handle the high-voltage and high-current demands of the HK-4000 series, ensuring stable power delivery and exceptional thermal reliability for professional audio applications.

Key Features:

  • Engineered for HK-4000: A direct OEM replacement designed specifically for the HK-4000 power architecture.

  • High-Power Output Stage: Features pre-aligned mounting positions for high-power Toshiba/ON Semi style output transistors (transistors usually sold separately or as per assembly type).

  • Advanced Thermal Design: The PCB layout is optimized for efficient heat transfer to the main heatsink, critical for maintaining stability during long-duration, high-output sessions.

  • Integrated Driver Circuitry: Includes the full driver and bias control stages to ensure low distortion and high signal fidelity.

  • Industrial Strength: Built on a heavy-duty, double-sided glass epoxy PCB with thick copper traces to manage high amperage without trace failure.

  • Plug-and-Play Connectivity: Features standard multi-pin header inputs for the control signal and high-current blade/screw terminals for power rail and speaker output connections.

Technical Specifications

Feature Specification
Model Compatibility HK-4000 Professional Series
Board Function Main Power Amplification (Single Channel)
Power Handling Rated for HK-4000 Specifications ($1250W$ @ 8Ω / $2000W$ @ 4Ω)
Circuit Class Professional Class H / Class AB (Model dependent)
PCB Type High-Temp Industrial Grade Double-Sided
Mounting Pre-drilled for standard HK-series Heatsink and Chassis

Fast Delivery

🚚 Fast & Reliable Delivery Across India

We strive to ensure a smooth and quick delivery experience for all our customers.


  • Same-Day Dispatch: All orders are usually dispatched on the same day, with daily cut-off around 4:00 PM IST.

  • Delivery Time: You can expect your order to reach you within 4–5 working days, depending on your location.

  • Pan India Shipping: We deliver across all cities and villages in India, so no matter where you are, we’ve got you covered.

  • Trusted Courier Partners: Your orders are shipped through reliable logistics partners like DTDC and Delhivery to ensure safe and timely delivery.

💡 Whether it’s a metro city or a remote village, you don’t need to worry — we make sure your order reaches you securely.

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